The median incomes of males in a random sample of 30 states of the United States, including the District of Columbia and Puerto Rico, are given in the table below ('Median income of,' 2013). Create a frequency distribution and a relative frequency distribution using 7 classes. a) Since data were collected for            variable(s), the correct graph to make is a b) Using the formula class width = (maxX - minX)/(number of classes) and rounding up to the next whole number, the class width is  Complete the frequency/relative frequency table using 7 classes. Round relative frequencies to 3 decimal places. c) Which of the following is the correct histogram for the given data?

The numbers of "near misses" recorded for the last 20 months at Lima International Airport are 3, 2, 3, 2, 2, 3, 5, 1, 2, 2, 4, 4, 2, 6, 3, 5, 2, 5, 1, and 3. Click here for the Excel Data File Determine the mean number of misses per month and the limits on the number of misses per month. (Leave no cells blank - be certain to enter "O" wherever required. Round your answers to 2 decimal places.) Mean number of defects per unit LCL UCL Are there any months where the number of near misses is out of control? O Yes O No MacBook Air

The information below represents some summary statistics for MAT361, fall 2019, students in quiz 1 and quiz 2. [2] Summary statistics Quiz 1 Quiz 2 6. 9 12 12 16 16 (Lowest, Highest) (2, 22) (2, 22) Draw a box plots in a single graph for quiz 1 and quiz 2 using the above information. Explain how the students did in quiz 2 compared to quiz 1?

Question 4The researcher wishes to use graphical descriptive methods to present summaries of the data on each of the two variables: hours worked per week and yearly income, as stored in file HOURSWORKED.jpga) The number of observations (n) is 65 individuals. The researcher suggests using 7 class intervals to construct a histogram for each variable. Explain how the researcher would have decided on the number of class intervals (K) as 7. b) The researcher suggests using class intervals as 10 < X ≤ 15, 15 < X ≤ 20, …, 40 < X ≤ 45 for the hours per week variable and class intervals 40 < X ≤ 45, 45 < X ≤ 50, ..., 70 < X ≤ 75 for the yearly income variable. Explain how the researcher would have decided the width of the above class intervals (or class width). c) Draw and display a histogram for each of the two variables using appropriate BIN values from part (b) and comment on the shape of the two distributions.